body {
  /* background-color: lightblue; */
  color: white;
  background-image: url('../images/xin.jpg');
}

#img {
  border: 1px solid red;
  width: 100px;
  height: 100px;
  background-image: url('../images/small.png');
  transform: rotate(60deg);
}

.noUse {
  color: red;
}